Finding the Fourth Proportional to 75,879.84, 113,727.60 and 53,699.70
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Solution
The fourth proportional to 75,879.84, 113,727.60 and 53,699.70 is: 80,484.33
Step by Step Solution
- Step 1: Write the proportion equation
75,879.84 : 113,727.60 = 53,699.70 : x - Step 2: Convert to fraction form
75,879.84/113,727.60 = 53,699.70/x - Step 3: Cross multiply
75,879.84x = 113,727.60 × 53,699.70 - Step 4: Simplify right side
75,879.84x = 6,107,138,001.72 - Step 5: Solve for x
x = 6,107,138,001.72/75,879.84 - Step 6: Final answer
x = 80,484.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.